Fine tuning of logging in django backend

gargantext/settings.py

@@ -105,12 +105,23 @@ LOGGING = {
             'level': LOG_LEVEL,
             'propagate': True,
         },
+        # All django loggers: https://docs.djangoproject.com/fr/1.11/topics/logging/#id3
         'django.template': {
             # Don't keep debug logs for template module to avoid annoying and
             # useless noise, see:
             # https://github.com/encode/django-rest-framework/issues/3982#issuecomment-325290221
             'level': 'INFO' if LOG_LEVEL == 'DEBUG' else LOG_LEVEL,
         },
+        'django.db.backends': {
+            'level': 'INFO',
+        },
+        'gargantext': {
+            'handlers': ['file'],
+            'level': LOG_LEVEL,
+            # Propagation to True means that this config applies to
+            # 'gargantext' logger and all 'gargantext.*'
+            'propagate': True,
+        },
     },
 }